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Fast domain wall motion in systems with perpendicular magnetization is necessary for many novel applications such as the racetrack memory, domain wall logic devices and artificial synapses. The domain wall speed has been greatly improved…

Mesoscale and Nanoscale Physics · Physics 2023-03-16 Jingwei Long , Yumeng Yang , Shuyuan Shi , Xuanyao Fong , Gengchiau Liang , Zhifeng Zhu

We theoretically study the current-induced dynamics of a transverse magnetic domain wall in bi-layer nanowires consisting of a ferromagnet on top of a nonmagnet having strong spin-orbit coupling. Domain wall dynamics is characterized by two…

Mesoscale and Nanoscale Physics · Physics 2012-07-18 Soo-Man Seo , Kyoung-Whan Kim , Jisu Ryu , Hyun-Woo Lee , Kyung-Jin Lee

We study spin textures in a quantum Hall Ising ferromagnet. Domain walls between ferro and unpolarized states at $\nu=2$ are analyzed with a functional theory supported by a microscopic calculation. In a neutral wall, Hartree repulsion…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 L. Brey , C. Tejedor

The control of magnetic domain walls is essential for the magnetic-based memory and logic applications. As an elementary excitation of magnetic order, spin wave is capable of moving magnetic domain walls just as the conducting electric…

Materials Science · Physics 2018-10-18 Weichao Yu , Jin Lan , Jiang Xiao

The current-induced motion of a domain wall in a semicircle nanowire with applied Zeeman field is investigated. Starting from a micromagnetic model we derive an analytical solution which characterizes the domain-wall motion as a harmonic…

Mesoscale and Nanoscale Physics · Physics 2015-06-25 Benjamin Krueger , Daniela Pfannkuche , Markus Bolte , Guido Meier , Ulrich Merkt

Understanding the domain wall dynamics is an important issue in modern magnetism. Here we present results of domain wall displacement in curved cylindrical nanowires at a constant magnetic field. We show that the average velocity of a…

Mesoscale and Nanoscale Physics · Physics 2017-11-22 R. Moreno , V. L. Carvalho-Santos , A. P. Espejo , D. Laroze , O. Chubykalo-Fesenko , D. Altbir

The dynamics of magnetic domain wall motion in the FeNi layer of a FeNi/Al2O3/Co trilayer has been investigated by a combination of x-ray magnetic circular dichroism, photoelectron emission microscopy, and a stroboscopic pump-probe…

The dynamics of a 90$^{\circ }$ domain wall in an antiferromagnetic nanostrip driven by the current-induced spin-orbital torque are theoretically examined in the presence of random thermal fluctuations. A soliton-type equation of motion is…

Materials Science · Physics 2019-06-26 Yuriy G. Semenov , Xinyi Xu , Ki Wook Kim

We study the depinning of domain walls by pure diffusive spin currents in a nonlocal spin valve structure based on two ferromagnetic permalloy elements with copper as the nonmagnetic spin conduit. The injected spin current is absorbed by…

The future developments of three-dimensional magnetic nanotechnology require the control of domain wall dynamics by means of current pulses. While this has been extensively studied in planar magnetic strips (planar nanowires), few reports…

We theoretically study the current-driven domain wall motion in the presence of both the spin Hall effect and an extrinsic pinning potential. The spin Hall effect mainly affects the damping ratio of the domain wall precession in the pinning…

Mesoscale and Nanoscale Physics · Physics 2013-05-02 Jisu Ryu , Kyung-Jin Lee , Hyun-Woo Lee

Control of magnetic domain wall motion by electric fields has recently attracted scientific attention because of its potential for magnetic logic and memory devices. Here, we report on a new driving mechanism that allows for magnetic domain…

We calculate the interaction between two magnetic domain walls during their current-induced motion. This interaction produces a separation-dependent resistance and also a differential velocity, causing domains in motion to experience an…

Mesoscale and Nanoscale Physics · Physics 2011-11-28 E. A. Golovatski , M. E. Flatté

Magnetic domain walls in antiferromagnets have been proposed as key components for faster conventional information processing, thanks to their enhanced stability and ultrafast propagation. However, how non-conventional computing methods…

We theoretically study the scattering of spin waves from a sharp domain wall in an antiferromagnetic spin chain. While the continuum model for an antiferromagnetic material yields the well-known result that spin waves can pass through a…

Mesoscale and Nanoscale Physics · Physics 2022-09-21 Ehsan Faridi , Se Kwon Kim , Giovanni Vignale

Current induced domain wall (DW) motion has been investigated in a 600-nm wide nanowire using multilayer film with a structure of Ta(5 nm)/Pd(5 nm)/[CoFe(0.4 nm)/Pd(1.2 nm)]$_{15}$/Ta(5 nm)in terms of anomalous Hall effect measurements. It…

Mesoscale and Nanoscale Physics · Physics 2014-07-30 Zhaoliang Meng , Manoj Kumar , Jinjun Qiu , Guchang Han , Kie Leong Teo , Duc-The Ngo

Domain wall motion driven by ultra-short laser pulses is a prerequisite for envisaged low-power spintronics combining storage of information in magneto electronic devices with high speed and long distance transmission of information encoded…

Mesoscale and Nanoscale Physics · Physics 2017-06-28 T. Janda , P. E. Roy , R. M. Otxoa , Z. Soban , A. Ramsay , A. C. Irvine , F. Trojanek , R. P. Campion , B. L. Gallagher , P. Nemec , T. Jungwirth , J. Wunderlich

The spin transfer torque generated by a spin-polarized current can induce the shift of the magnetic domain-wall position. In this work, we study theoretically the current-induced domain-wall motion by using the collective coordinate…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Soon-Wook Jung , Hyun-Woo Lee

Domain wall propagation dynamics have been studied in nanostructured artificial kagome spin ice structures. A stripline circuit has been used to provide localised pulsed magnetic fields within the artificial spin ice structure. This…

Mesoscale and Nanoscale Physics · Physics 2017-03-22 D. M. Burn , M. Chadha , W. R. Branford

Domain wall propagation in modulated-diameter cylindrical nanowires is a key phenomenon to be studied with a view to designing three-dimensional magnetic memory devices. This paper presents a theoretical study of transverse domain wall…

Mesoscale and Nanoscale Physics · Physics 2018-07-18 J. A. Fernandez-Roldan , A. De Riz , B. Trapp , C. Thirion , J. -C. Toussaint , O. Fruchart , D. Gusakova